Comment by _kb

HTTP range requests [1] are enabled out-of-the-box on both Apache and NGINX for static content. If you slap a fMP4 [2] onto a vhost it will work. No CDN needed.

Going viral is a seperate technical challenge, but probably not needed in almost every use case.

[1]: https://http.dev/range-request

[2]: https://cloudinary.com/glossary/fragmented-mp4